Medius X26 Belt Tensioner Shaft for Precise Tension — Serpent 402201  [SER402201]

X26 tensioner shaft overview

This Serpent 402201 belt tensioner shaft is an RC-scale replacement component made for belt-driven Serpent Medius X26 kits. Fabricated from steel, it performs the core role of setting and holding belt tension within the tensioner assembly to help the belt track true and limit slack-related drivetrain drag in electric on-road models.

The component suits builders and technicians looking for a straightforward, durable pivot shaft for the tensioner sub-assembly. Installed at the tensioner pivot, it pairs with the tensioner pulley and bracket to keep belt alignment consistent under load. As an aftermarket shaft it emphasises fit and material strength rather than cosmetic changes.

Installation notes: insert the shaft into the tensioner bracket and pulley stack per your kit assembly sequence, confirm free pulley rotation and correct belt tracking, then check belt tension across full travel. Treat this item as an RC kit part; consult your kit manual or seller for recommended torque figures and any small hardware details.

This steel shaft provides a direct replacement for the Medius X26 tensioner assembly, aimed at builders who prioritise steady belt tension and reliable drivetrain performance in electric RC kits.